186 GAMOPETALOUS EXOGENS 



larly bilabiate, the upper lip longer, 2-lobed, lower lip 3-lobed, 

 the middle lobe reflexed. Stamens didynamous, with a scale-like ru- 

 diment of a fifth at the base of the upper lip. Capsule ovoid, acute ; 

 seeds ovoid, rugose. Leaves mostly opposite; flowers cymose, in a 

 contracted oblong terminal panicle. 



1. S. 11O1 v *Sfcl, L. Smoothish; stem square, tall, branched above; 



leaves lance-ovate, acute, incised-serrate, rounded at base. 



S. Marilandica. L. $ FL Cestr. ed. 2. p. 370. 



NODOSE SCROPHULARIA. Fig-wort. Carpenter's Square. 



Perennial. Stem 3 to 5 or 6 feet high, with a slight wing or ridge on the angles, 

 by the decurrence of the petioles. Leives 3 to 5 inches long, the upper ones lance- 

 olate; petioles % an inch to 2 inches in length. Panicle 9 to 18 inches long (those 

 terminating the branches shorter), sprinkled with glandular or capitate hairs; 

 corolla dull purplish-brown tinged with green, contracted at throat; stamens con- 

 spicuous in the throat of the corolla, the abortive one a green spatulate scale. 

 Hob. Woods; fence-rows, &c.: frequent. Fl. June. Fr. Aug. 



Obs. This is now regarded as not sufficiently distinct from the S, 

 nodosa, of Europe. 



268. CHELOWE, Tournef. 



[Gr. Chelone, a Tortoise; the flower resembling the head of that animal.] 



Calyx of 5 imbricated sepals. Corolla inflated-tubular, the upper 

 lip broad and arched, emarginate, lower lip villous within, 3-lobed 

 at apex. Stamens didynamous, with a fifth sterile filament shorter 

 than the others ; filaments woolly ; anthers cordate, very woolly. 

 Capsule ovoid; seeds membranaceously margined. Smooth perenni- 

 als: leaves opposite; flowers imbricated in crowded bracteate 

 spikes. 



1. C. glftlfora, L. Leaves oblong-lanceolate, serrate, subcoria- 



ceous, on very short petioles. 



GLABROUS CHELONE. Shell-flower. Tortoise-head. Snake-head. 



Stf.m 2 to 3 feet high, obtusely 4-angled, simple or sparingly branched. Leaves 

 2 to 4 or 5 inches long. Spikes 1 to 2 or 3 inches in length, thick and crowded ; 

 bracts ovate-oblong ; flowers white; sterile- filament smooth at summit. 

 Hdb. Along swampy rivulets: frequent. Fl. Aug. Fr. Octo. 



269. 



[Gr. Pente, five, and Stemon, a stamen; from the fifth abortive stamen.] 

 Calyx of 5 nearly distinct sepals. Corolla inflated-tubular, con- 

 tracted below; upper lip 2-lobed, loiocr lip 8-cleft. Stam ens didyna- 

 mous, smooth, declined at base, with a fifth sterile filament usually 

 as long as the others, and the upper half often bearded on one side, 

 Capsule ovoid, acute ; seeds angular-ovoid, not margined. 2'erenni- 

 als : leaves opposite ; flowers in a terminal thyrsoid panicle. 



1. IP. putltSCens, Soland. More or less hairy; radical leaves 

 ovate-oblong, petiolate ; stem-leaves lanceolate, sessile or clasping. 

 PUBESCENT PENTSTEMON. 



Stem 9 to 15 inches high, erect or decumbent, nearly simple, or branching from 

 the base. Leaves 2 to 4 or 5 inches long, tapering to the apex, but rather obtuse, 

 serrulate, or nearly entire. Panicle di- or tri-chotomous, viscid-pubescent; corolla 

 about an inch long, palish violet-purple, pubescent, the tube contracted below, 



